package com.guan.trend.util;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @ClassName SpringContextUtil
 * @Author GuanCary
 * @Date 2020/4/19 19:35
 * @Version 1.0
 **/
//将该类注册
@Component
public class SpringContextUtil implements ApplicationContextAware {

    private SpringContextUtil() {
        System.out.println("SpringContextUtil()");
    }

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext){
        System.out.println("applicationContext:"+applicationContext);
        SpringContextUtil.applicationContext = applicationContext;
    }

    public static <T> T getBean(Class<T> clazz) {
        return applicationContext.getBean(clazz);
    }

}